What are your thoughts on the "he's just not that into you" theory?

To fill in those of you who may not know, the theory is that if a guy is into you, he will ask you out. You don’t need to make a move, he will. If you do make a move, and things work out for a while, it never will in the end because the man did not make the first move. I’m a huge fan of this. I’m a feminist and all, but it has never worked for me to be the one pursuing a guy. Never. Those relationships never lasted. I have asked out men on multiple occasions and every time I have learned that it’s a bad idea!